10 CFR 431.96 - Uniform test method for the measurement of energy efficiency of commercial air conditioners and heat pumps.

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§ 431.96 Uniform test method for the measurement of energy efficiency of commercial air conditioners and heat pumps.
(a) Scope. This section contains test procedures for measuring, pursuant to EPCA, the energy efficiency of any small, large, or very large commercial package air-conditioning and heating equipment, packaged terminal air conditioners and packaged terminal heat pumps, computer room air conditioners, variable refrigerant flow systems, and single package vertical air conditioners and single package vertical heat pumps.
(b) Testing and calculations.
(1) Determine the energy efficiency of each covered product by conducting the test procedure(s) listed in the rightmost column of Table 1 of this section, that apply to the energy efficiency descriptor for that product, category, and cooling capacity, until compliance with this test procedure version is no longer required per the date shown in the 5th most column from the left of Table 1 of this section.
Table 1 to § 431.96 —Test Procedures for Commercial Air Conditioners and Heat Pumps
Equipment type Category Cooling capacity Energy efficiency descriptor Test procedure required for compliance until Use tests, conditions, and procedures 1 in
1 Incorporated by reference, see § 431.95.
Small Commercial Packaged Air-Conditioning and Heating Equipment Air-Cooled, 3-Phase, AC and HPAir-Cooled AC and HP <65,000 Btu/h≥65,000 Btu/h and <135,000 Btu/h SEER and HSPFEER and COP May 13, 2013May 13, 2013 ARI 210/240-2003.ARI 340/360-2004.
Water-Cooled and Evaporatively-Cooled AC <65,000 Btu/h≥65,000 Btu/h and <135,000 Btu/h EEREER May 13, 2013May 13, 2013 ARI 210/240-2003.ARI 340/360-2004.
Water-Source HP <135,000 Btu/h EER and COP May 13, 2013 ISO Standard 13256-1 (1998).
Large Commercial Packaged Air-Conditioning and Heating Equipment Air-Cooled AC and HPWater-Cooled and Evaporatively-Cooled AC ≥135,000 Btu/h and <240,000 Btu/h≥135,000 Btu/h and <240,000 Btu/h EER and COPEER May 13, 2013May 13, 2013 ARI 340/360-2004.ARI 340/360-2004.
Very Large Commercial Packaged Air-Conditioning and Heating Equipment Air-Cooled AC and HPWater-Cooled and Evaporatively-Cooled AC ≥240,000 Btu/h and <760,000 Btu/h≥240,000 Btu/h and <760,000 Btu/h EER and COPEER May 13, 2013May 13, 2013 ARI 340/360-2004.ARI 340/360-2004.
Packaged Terminal Air Conditioners and Heat Pumps AC and HP <760,000 Btu/h EER and COP May 13, 2013 AHRI 310/380-2004.
(2) On or after the compliance dates listed in Table 2 of this section, determine the energy efficiency of each type of covered equipment by conducting the test procedure(s) listed in the rightmost column of Table 2 of this section along with any additional testing provisions set forth in paragraphs (c), (d), and (e) of this section, that apply to the energy efficiency descriptor for that equipment, category, and cooling capacity. Note, the omitted sections of the test procedures listed in the rightmost column of Table 1 of this section shall not be used.
Table 2 to § 431.96 —Test Procedures for Commercial Air Conditioners and Heat Pumps
Equipment type Category Cooling capacity Energy efficiency descriptor Compliance with test procedure required on or after Use tests, conditions, and procedures 1 in
1 Incorporated by reference, see § 431.95.
Small Commercial Packaged Air-Conditioning and Heating Equipment Air-Cooled, 3-Phase, AC and HPAir-Cooled AC and HP <65,000 Btu/h≥65,000 Btu/h and <135,000 Btu/h SEER and HSPFEER and COP May 13, 2013May 13, 2013 AHRI 210/240-2008 (omit section 6.5).AHRI 340/360-2007 (omit section 6.3).
Water-Cooled and Evaporatively-Cooled AC <65,000 Btu/h≥65,000 Btu/h and <135,000 Btu/h EEREER May 13, 2013May 13, 2013 AHRI 210/240-2008 (omit section 6.5).AHRI 340/360-2007 (omit section 6.3).
Water-Source HP <135,000 Btu/h EER and COP May 13, 2013 ISO Standard 13256-1 (1998).
Large Commercial Packaged Air-Conditioning and Heating Equipment Air-Cooled AC and HPWater-Cooled and Evaporatively-Cooled AC ≥135,000 Btu/h and <240,000 Btu/h≥135,000 Btu/h and <240,000 Btu/h EER and COPEER May 13, 2013May 13, 2013 AHRI 340/360-2007 (omit section 6.3).AHRI 340/360-2007 (omit section 6.3).
Very Large Commercial Packaged Air-Conditioning and Heating Equipment Air-Cooled AC and HPWater-Cooled and Evaporatively-Cooled AC ≥240,000 Btu/h and <760,000 Btu/h≥240,000 Btu/h and <760,000 Btu/h EER and COPEER May 13, 2013May 13, 2013 AHRI 340/360-2007 (omit section 6.3).AHRI 340/360-2007 (omit section 6.3).
Packaged Terminal Air Conditioners and Heat Pumps AC and HP <760,000 Btu/h EER and COP May 13, 2013 AHRI 310/380-2004 (omit section 5.6).
Computer Room Air Conditioners AC <65,000 Btu/h<65,000 Btu/h and <760,000 Btu/h SCOPSCOP October 29, 2012May 13, 2013 ASHRAE 127-2007 (omit section 5.11).ASHRAE 127-2007 (omit section 5.11).
Variable Refrigerant Flow Multi-split Systems AC <760,000 Btu/h EER and COP May 13, 2013 AHRI 1230-2010 (omit sections 5.1.2 and 6.6).
Variable Refrigerant Flow Multi-split Systems, Air-cooled HP <760,000 Btu/h EER and COP May 13, 2013 AHRI 1230-2010 (omit sections 5.1.2 and 6.6).
Variable Refrigerant Flow Multi-split Systems, Water-source HP <17,000 Btu/h EER and COP October 29, 2012 AHRI 1230-2010 (omit sections 5.1.2 and 6.6).
Variable Refrigerant Flow Multi-split Systems, Water-source HP ≥17,000 Btu/h and <760,000 Btu/h EER and COP May 13, 2013 AHRI 1230-2010 (omit sections 5.1.2 and 6.6).
Single Package Vertical Air Conditioners and Single Package Vertical Heat Pumps AC and HP <760,000 Btu/h EER and COP July 16, 2012 AHRI 390-2003 (omit section 6.4).
(c) Optional break-in period for tests conducted using AHRI 210/240-2008, AHRI 340/360-2007, AHRI 390-2003, AHRI 1230-2010, and ASHRAE 127-2007. Manufacturers may optionally specify a “break-in” period, not to exceed 20 hours, to operate the equipment under test prior to conducting the test method specified by AHRI 210/240-2008, AHRI 340/360-2007, AHRI 390-2003, AHRI 1230-2010, or ASHRAE 127-2007 (incorporated by reference, see § 431.95). A manufacturer who elects to use an optional compressor break-in period in its certification testing should record this information (including the duration) in the test data underlying the certified ratings that is required to be maintained under 10 CFR 429.71.
(d) Refrigerant line length corrections for tests conducted using AHRI 1230-2010. For test setups where it is physically impossible for the laboratory to use the required line length listed in Table 3 of the AHRI 1230-2010 (incorporated by reference, see § 431.95), then the actual refrigerant line length used by the laboratory may exceed the required length and the following correction factors are applied:
Piping length beyond minimum, X (ft) Piping length beyond minimum, Y (m) Cooling capacity correction %
0> X ≤20 0> Y ≤6.1 1
20> X ≤40 6.1> Y ≤12.2 2
40> X ≤60 12.2> Y ≤18.3 3
60> X ≤80 18.3> Y ≤24.4 4
80> X ≤100 24.4> Y ≤30.5 5
100 > X ≤120 30.5> Y ≤36.6 6
(e) Additional provisions for equipment set-up. The only additional specifications that may be used in setting up the basic model for test are those set forth in the installation and operation manual shipped with the unit. Each unit should be set up for test in accordance with the manufacturer installation and operation manuals. Paragraphs (e)(1) through (3) of this section provide specifications for addressing key information typically found in the installation and operation manuals.
(1) If a manufacturer specifies a range of superheat, sub-cooling, and/or refrigerant pressure in its installation and operation manual for a given basic model, any value(s) within that range may be used to determine refrigerant charge or mass of refrigerant, unless the manufacturer clearly specifies a rating value in its installation and operation manual, in which case the specified rating value shall be used.
(2) The air flow rate used for testing must be that set forth in the installation and operation manuals being shipped to the commercial customer with the basic model and clearly identified as that used to generate the DOE performance ratings. If a rated air flow value for testing is not clearly identified, a value of 400 standard cubic feet per minute (scfm) per ton shall be used.
(3) For VRF systems, the test set-up and the fixed compressor speeds (i.e., the maximum, minimum, and any intermediate speeds used for testing) should be recorded and maintained as part of the test data underlying the certified ratings that is required to be maintained under 10 CFR 429.71.
(f) Manufacturer involvement in assessment or enforcement testing for variable refrigerant flow systems. A manufacturer's representative will be allowed to witness assessment and/or enforcement testing for VRF systems. The manufacturer's representative will be allowed to inspect and discuss set-up only with a DOE representative and adjust only the modulating components during testing in the presence of a DOE representative that are necessary to achieve steady-state operation. Only previously documented specifications for set-up as specified under paragraphs (d) and (e) of this section will be used.
[77 FR 28989, May 16, 2012]

Title 10 published on 2014-01-01

The following are only the Rules published in the Federal Register after the published date of Title 10.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2014-12-03; vol. 79 # 232 - Wednesday, December 3, 2014
    1. 79 FR 71624 - Energy Conservation Program: Test Procedures for Commercial Clothes Washers
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      DEPARTMENT OF ENERGY, Office of Energy Efficiency and Renewable Energy
      Final rule.
      The effective date of this rule is January 2, 2015.
      10 CFR Parts 429 and 431

Title 10 published on 2014-01-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 10 CFR 431 after this date.

  • 2014-12-10; vol. 79 # 237 - Wednesday, December 10, 2014
    1. 79 FR 73246 - Energy Conservation Standards for Commercial and Industrial Fans and Blowers: Availability of Provisional Analysis Tools
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      DEPARTMENT OF ENERGY, Office of Energy Efficiency and Renewable Energy
      Notice of data availability.
      Comments: DOE will accept comments, data, and information regarding this notice of data availability (NODA) no later than January 26, 2015.
      10 CFR Part 431